The invention relates to a process for the preparation of a compound of formula (I):
Which comprises reaction of a compound of formula (II) with a compound of the formula (III) in the presence of a chlorinating agent, followed by reaction of the resultant compound of the formula (IV) with a compound of formula (V) in the presence of a base:
wherein the various symbols are as defined in claim 1.
本发明涉及一种制备式(I)化合物的方法,该方法包括在
氯化剂存在下使式(II)化合物与式(III)化合物反应,然后在碱存在下使所得的式(IV)化合物与式(V)化合物反应,其中各符号如权利要求1所定义。